Abstract: An inkjet printing machine for printing individual sheets comprises at least one printing station and a transport system defining a transport track (101) for transporting the individual sheets through the printing station, along a transport direction. The transport system comprises a plurality of gripper conveyors (150) running along the transport track (101) for holding the individual sheets during a printing process in the printing station. At least one of the plurality of gripper conveyors (150) comprises a gripper mechanism (175) for gripping a leading edge of one of the individual sheets and at least one of the plurality of gripper conveyors comprises a gripper mechanism (175) for gripping a trailing edge of the individual sheet. The transport system further comprises a linear motor (116, 165) being controllable in such a way that movement of each of the gripper conveyors (150) along the transport track (101) is individually controllable.

Abstract: An inkjet printing machine for printing individual sheets comprises at least one printing station and a transport system defining a transport track (101) for transporting the individual sheets through the printing station, along a transport direction. The transport system comprises a plurality of gripper conveyors (150) running along the transport track (101) for holding the individual sheets during a printing process in the printing station. At least one of the plurality of gripper conveyors (150) comprises a gripper mechanism (175) for gripping a leading edge of one of the individual sheets and at least one of the plurality of gripper conveyors comprises a gripper mechanism (175) for gripping a trailing edge of the individual sheet. The transport system further comprises a linear motor (116, 165) being controllable in such a way that movement of each of the gripper conveyors (150) along the transport track (101) is individually controllable.

Abstract: Curing apparatus, image forming apparatus and articles of manufacture are disclosed. An example curing apparatus includes a curing unit to heat an area adjacent a substrate travel path, the curing unit having a width less than a width of the substrate travel path, and a controller to reciprocate the curing unit within the substrate width.

Abstract: Curing apparatus, image forming apparatus and articles of manufacture are disclosed. An example curing apparatus includes a curing unit to heat an area adjacent a substrate travel path, the curing unit having a width less than a width of the substrate travel path, and a controller to reciprocate the curing unit within the substrate width.

Abstract: Curing apparatus, image forming apparatus and articles of manufacture are disclosed. An example curing apparatus includes a curing unit to heat an area adjacent a substrate travel path, the curing unit having a width less than a width of the substrate travel path, and a controller to reciprocate the curing unit within the substrate width.

Abstract: In one example, a vapor control heater for a printer includes a housing, a heating element at least partially enclosed by the housing, and a fan to move air over the heating element and into a flow of air from the printer dryer.

Abstract: In one example, a printer includes a paper path having a drying area, a printhead near the paper path upstream from the drying area, and a convection dryer to force air simultaneously into an upstream part of the drying area at a first density and into a downstream part of the drying area at a second density less than the first density and to force air into the upstream part of the drying area at a first air speed for a duration and then at a second air speed faster than the first air speed.

Abstract: An example printing device composing a first printhead and a second printhead is described. In some examples the example printing device comprises a controller. The example printing device is to operate in a first operating mode in which the first printhead is to dispense a first printing substance, the first printing substance to transfer color via a first colorant transfer mechanism, and to operate in a second operating mode in which the second printhead is to dispense a second printing substance, the second printing substance to transfer via a second colorant transfer mechanism different to the first colorant transfer mechanism. An example controller is to cause the example printing device to operate in a selected one of the first and second operating modes.

Abstract: A drying assembly is disclosed. An example apparatus includes fans; a temperature sensor; a print engine to access instructions to cause a printer to perform a printing operation on media; and a processor responsive to an output of the temperature sensor to control the fans to force air onto the media to cause a substantially uniform temperature to be maintained across a width of the media during the printing operation and to cause a sum of air flow output by the fans to be maintained at a substantially constant value.

Abstract: Apparatus for directing air to media. The apparatus including an impinging plate having an array of orifices. The orifices are arranged in a plurality of rows oblique to the direction of motion of the media, and are also arranged to provide air to the media.

Abstract: In one example, a print zone heater includes a structure defining a plenum, a heating element, a fan to move air over the heating element into the plenum, and a conduit from the plenum to carry heated air into the print zone.

Abstract: In one example, a printer includes a paper path having a drying area, a printhead near the paper path upstream from the drying area, and a convection dryer to force air simultaneously into an upstream part of the drying area at a first density and into a downstream part of the drying area at a second density less than the first density and to force air into the upstream part of the drying area at a first air speed for a duration and then at a second air speed faster than the first air speed.

Abstract: Curing apparatus, image forming apparatus and articles of manufacture are disclosed. An example curing apparatus includes a curing unit to heat an area adjacent a substrate travel path, the curing unit having a width less than a width of the substrate travel path, and a controller to reciprocate the curing unit within the substrate width.

Abstract: In one example, a heating system includes a first heater having a first resistive heating element, a second heater having multiple second resistive heating elements arranged in parallel with a group of the second heating elements having a combined resistance equal to a resistance of the first heating element, and a controller to periodically switch power between the first heating element and the group of second heating elements at a zero crossing of an AC power source.

Abstract: Curing apparatus, image forming apparatus and articles of manufacture are disclosed. An example curing apparatus includes a curing unit to heat an area adjacent a substrate travel path, the curing unit having a width less than a width of the substrate travel path, and a controller to reciprocate the curing unit within the substrate width.

Abstract: A convection dryer device is disclosed. The convection dryer uses a first fan speed before the leading edge of media reaches a first location in a drying area and a second fan speed, faster than the first fan speed, after the leading edge of media reaches first location.

Abstract: A drying assembly is disclosed. An example apparatus includes fans; a temperature sensor; a print engine to access instructions to cause a printer to perform a printing operation on media; and a processor responsive to an output of the temperature sensor to control the fans to force air onto the media to cause a substantially uniform temperature to be maintained across a width of the media during the printing operation and to cause a sum of air flow output by the fans to be maintained at a substantially constant value.

Abstract: A drying assembly is disclosed. An example apparatus includes fans; a temperature sensor; a print engine to access instructions to cause a printer to perform a printing operation on media; and a processor responsive to an output of the temperature sensor to control the fans to force air onto the media to cause a substantially uniform temperature to be maintained across a width of the media during the printing operation and to cause a sum of air flow output by the fans to be maintained at a substantially constant value.

Abstract: In an embodiment, a method of maintaining nozzles in a print-ready condition includes determining image content to be printed in an upcoming print swath, and for each ink color present within the image content, constructing an inked portion of an associated spit bar adjacent to the upcoming print swath to include the present ink color. For each ink color not present within the image content, an empty portion of an associated spit bar is constructed adjacent to the upcoming print swath.

Abstract: A convection dryer device is disclosed. The convection dryer uses a first fan speed before the leading edge of media reaches a first location in a drying area and a second fan speed, faster than the first fan speed, after the leading edge of media reaches first location.